Wall System 1 Party Wall Soundproofing Kit

Materials supplied with this system:

• Acoustic insulation 50mm/60kg/m3 – High-density sound insulation slabs
• Soundbreaker Bars 3m – Resilient isolation channels
• Noisestop 1 Plus Panel 18mm –  12.5mm soundboard laminated with 10kg mass-loaded vinyl 1200mm x 1200mm (1.44sqm)
• Acoustic sealant 310ml

Select the required Total Wall Area from the dropdown box at the top of the page to see the quantities supplied with this system.

We recommend ordering areas individually and adding them to the basket rather than adding them to one large area. You can order multiple areas in the same order.

Quantity of materials supplied in your order

• System thickness 35mm (from
• Noise reduction 58dB
• Fire thirty minutes

Thermal Resistance R:

• Acoustic plasterboard 12.5 mm = 0.050 m2 K/W
• Acoustic plasterboard 15.0 mm = 0.060 m2 K/W
• Mass loaded vinyl 0.14 m² K/W
• Acoustic insulation 2.90 W/mK

Thermal Conductivity λR:

• Acoustic plasterboard 0.25 W/mK to BS EN 12524:2000
• Mass loaded vinyl 0.037 W/mK
• Acoustic insulation 0.034 W/mK

Reaction to Fire

• Acoustic plasterboard 12.5mm & 15mm Euroclass A2-s1, d0
• Mass loaded vinyl 10kg EN 13501-1 B-s2,d0 (2)
• Acoustic insulation EN13501-1: A1

Untreated brick wall DnT,w

Single skin 100mm brick wall 38db

Treated brick wall DnT,w

Wall System 1 applied 59dB

Improvement DnT,w

Noise reduction with treatment 21dB

Note: Every 10 decibels(dB) reduction in noise level is roughly perceived as a halving of the perceived loudness. So, for instance, if you have a sound that measures 70dB and it decreases to 60dB, it would sound about half as loud to the human ear.

Install Wall System 1 onto a stud frame. The framework can be a timber or metal frame. Try to avoid mechanical fixing into the party wall. If you don’t fit into the existing wall, you will reduce the chance of sound transfer through the wall. Fix the stud frame to the floor and ceiling and into the return walls to secure the wall.

You should isolate the stud frame with the Noisestop Isolation Strips around the perimeter of the stud frame.

It is vital to ensure the depth of the stud frame is equal to, or deeper than, the thickness of the acoustic insulation. Acoustic insulation slabs will not compress. If you try to compress the slabs too much, the plasterboard will eventually move and crack along the edges of the boards.

NOTE: Leave a small gap, if possible, of at least 10mm between the existing wall and the new stud frame; this will further reduce sound transfer between the two walls.

Wall preparation

Before installing the new acoustic wall, you should remove all wall decorations, skirting boards, coving, picture rails, and electrical outlets. Once the work is complete, extend the electrical cable as needed to reinstate the electrics.

Step 1. Insulating the stud frame

Infill the stud frame with DFM acoustic insulation. Fill the cavity with acoustic insulation without gaps between the insulation and the stud work.

You can cut acoustic insulation with a hand saw or an old bread knife. Measure the opening between the studs and cut the insulation approximately 5mm wider. Cutting the slabs wider than the opening will mean the slabs will friction fit between the studs. You shouldn’t need to use fixing to hold the slabs in place; if necessary, you can fasten a screw or nail into the side of the stud to hold the insulation in place.

Step 2. Fitting Soundbreaker bars

Fasten the Soundbreaker bars perpendicular to the stud frame.

NOTE: The bars have a pre-drilled edge with holes running along the entire length of the bar. This section should always be at the bottom of the bar. The wider corrugated part of the bar should be facing into the room.

Screw the bars straight into the stud frame using the pre-drilled holes as the pilot hole. Fasten the first bar 50mm from the floor up the wall. Fix the bars into each stud along the entire length of the bar. The bars are 3m long; if your wall is longer than 3m, you should overlap the bars by 100mm to extend them. Space the bars at 600mm centres. Measure from the floor and fix a bar, in the same way, up the wall. A soundbreaker bar should be installed 50mm from the bottom of the wall and 50mm from the top.

Step 3. Fitting the soundproof panels

The soundproof panels are fastened to the soundbreaker bars using drywall or universal screws. You can not nail into the bars. You will not need to drill the boards before you attach them. Screw straight through the panel into the wide corrugated flange of the bar. You should be able to use 15 screws per full-size panel, 1200mm x 1200mm. Fasten into the three bars behind the boards with five screws per bar. Do not over-tighten the screws. They should be flush or just below the surface of the plasterboard face.

NOTE: Fit the boards with the blue face of the acoustic plasterboard facing into the room, and the mass-loaded barrier mat on the back of the board facing into the wall.

 When you reach the edges of the wall, you must cut the soundproof boards. You can use a Stanley knife, hand saws, circular saws, or a jigsaw to do this.

Ensuring that every edge of the panels is well-fitted and sealed is essential. Do not leave gaps between the boards; ensure they are butted together. Use acoustic sealant along the edges of each panel as you install them. Once you’ve fitted the first board, run a bead of the acoustic sealant along the edge and install the next. Check the wall once all the panels have been fitted, ensuring you fill small gaps with the acoustic sealant.

Step 4. Finishing you wall

All our soundproof panels are manufactured using a 12.5mm acoustic plasterboard with tapered edges; you can finish the boards in two different ways. You can plaster skim straight onto the face of the panels using multi-skim thin-coat plaster. Alternatively, you can also tape the tapered edge of the panel, fil, and sand them before decorating.

Reinstate your wall furniture as necessary. You can reinstate electrical points back into the wall. To avoid cutting out wall sections, we recommend surface-mounted sockets. If you are using recessed back boxes, use the acoustic putty pads to ensure the soundproofing integrity of the wall.

Due to the nature of most of the materials we supply, orders are typically delivered on pallets.

All orders will be wrapped, protected, and secured to the pallet to ensure they arrive in the best possible condition. Goods will be delivered as near to the property as possible. The drivers will not be able to carry orders into your property.

Deliveries are made between 8am and 6pm, Monday to Friday.

Once an order has been placed, you will be notified of the expected delivery date. Please ensure someone is available to sign for the delivery.

We charge a flat delivery rate of £60 plus VAT for palletised deliveries. We do not charge per pallet, no matter how many pallets are used to deliver your order.

Orders placed for items weighing less than 20kg will be sent via courier for £20 plus VAT.

We have a high stock level, so we typically deliver orders in approximately three working days.

If you want to speak to us regarding your delivery, please call 01423 339163.

Please check out our full delivery terms for more details.

Delivery Information